J/A+A/365/409 ISO continuum observations of quasars (Oyabu+, 2001)
ISO continuum observations of quasars at z=1-4.
I. Spectral energy distributions of quasars from UV to far-infrared
Oyabu S., Kawara K., Tsuzuki Y., Sofue Y., Sato Y., Okuda H.,
Taniguchi Y., Shibai H., Gabriel C., Hasegawa T. and Nishihara E.
<Astron. Astrophys. 365, 409 (2001)>
=2001A&A...365..409O 2001A&A...365..409O
ADC_Keywords: QSOs ; Infrared sources ; Photometry, VRI ; Photometry, infrared
Mission_Name: ISO
Keywords: infrared: galaxies - infrared: ISM: continuum - quasars: general -
galaxies: photometry
Abstract:
Eight luminous quasars with -30<MB←27 at z=1.4-3.7 have been
observed in the mid- and far-infrared using ISO. All the quasars have
been detected in the mid-infrared bands of ISOCAM, while no
far-infrared detections have been made with ISOPHOT. SEDs (Spectral
Energy Distributions) from the UV to far-infrared have been obtained
while supplementing ISO observations with photometry in the optical
and near-infrared made from the ground within 17 months. The SEDs are
compared with the MED (Mean spectral Energy Distributions) of
low-redshift quasars with -27<MB←22. It is shown that our
far-infrared observations were limited by confusion noise due to
crowded sources.
Description:
File table3 contains the flux of quasars at high-redshift observed
with ISO. File table4 contains the magnitude of them observed from the
ground.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 76 8 List of ISO flux if quasars
table4.dat 92 7 List of optical and near-infrared magnitudes
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See also:
J/MNRAS/238/1171 : Optical/IR obs. of Radio Galaxies and QSOs (Dunlop+, 1989)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name of the source
14- 17 F4.2 mJy LW2 LW2 (6.7µm) flux
19- 22 F4.2 mJy e_LW2 Error of LW2 flux
24- 27 F4.1 mJy LW3 ? LW3 (14.3µm) flux
29- 32 F4.2 mJy e_LW3 ? Error of LW3 flux
34- 37 F4.2 mJy LW10 ? LW10 (12.0µm) flux
39- 42 F4.2 mJy e_LW10 ? Error of LW10 flux
44- 47 F4.1 mJy C90 ? C90 (90µm) flux
49- 50 I2 mJy e_C90 ? Error of C90 flux
52- 56 F5.1 mJy C160 C160 (170µm) flux
58- 60 I3 mJy e_C160 Error of C160 flux
62- 66 F5.1 10+13solLum LUVO UVO (0.1µm to 1µm) luminosity
68 A1 --- l_LIR Limit flag on LIR
69- 71 I3 10+13solLum LIR (1.5µm to 100µm) IR luminosity
73- 76 F4.1 10+13solLum L1.25 1.25 micron luminosity
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name of the source
14- 18 F5.2 mag Vmag ? V magnitude
20- 23 F4.2 mag e_Vmag ? rms uncertainty on Vmag
25- 29 F5.2 mag Rmag ? R magnitude
31- 34 F4.2 mag e_Rmag ? rms uncertainty on Rmag
36- 40 F5.2 mag Imag ? I magnitude
42- 45 F4.2 mag e_Imag ? rms uncertainty on Imag
47- 51 F5.2 mag Jmag ? J magnitude
53- 56 F4.2 mag e_Jmag ? rms uncertainty on Jmag
58- 62 F5.2 mag Hmag ? H magnitude
64- 67 F4.2 mag e_Hmag ? rms uncertainty on Hmag
69- 73 F5.2 mag K'mag ? K' magnitude
75- 78 F4.2 mag e_K'mag ? rms uncertainty on K'mag
80- 87 A8 "YY/MM/DD" ObsDate Universal time when observed
89- 92 A4 --- Tel Observed telescope (1)
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Note (1): The following abbreviations are used:
Kiso: the 1m Schmidt telescope at the Kiso observatory
OAO: the 1.88m telescope at Okayama Astrophysical Observatory
CTIO: the 0.9m telescope at CTIO
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Acknowledgements: S. Oyabu
(End) Patricia Bauer [CDS] 27-Oct-2000